1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _BPF_CGROUP_H
3 #define _BPF_CGROUP_H
4 
5 #include <linux/bpf.h>
6 #include <linux/bpf-cgroup-defs.h>
7 #include <linux/errno.h>
8 #include <linux/jump_label.h>
9 #include <linux/percpu.h>
10 #include <linux/rbtree.h>
11 #include <net/sock.h>
12 #include <uapi/linux/bpf.h>
13 
14 struct sock;
15 struct sockaddr;
16 struct cgroup;
17 struct sk_buff;
18 struct bpf_map;
19 struct bpf_prog;
20 struct bpf_sock_ops_kern;
21 struct bpf_cgroup_storage;
22 struct ctl_table;
23 struct ctl_table_header;
24 struct task_struct;
25 
26 unsigned int __cgroup_bpf_run_lsm_sock(const void *ctx,
27 				       const struct bpf_insn *insn);
28 unsigned int __cgroup_bpf_run_lsm_socket(const void *ctx,
29 					 const struct bpf_insn *insn);
30 unsigned int __cgroup_bpf_run_lsm_current(const void *ctx,
31 					  const struct bpf_insn *insn);
32 
33 #ifdef CONFIG_CGROUP_BPF
34 
35 #define CGROUP_ATYPE(type) \
36 	case BPF_##type: return type
37 
38 static inline enum cgroup_bpf_attach_type
to_cgroup_bpf_attach_type(enum bpf_attach_type attach_type)39 to_cgroup_bpf_attach_type(enum bpf_attach_type attach_type)
40 {
41 	switch (attach_type) {
42 	CGROUP_ATYPE(CGROUP_INET_INGRESS);
43 	CGROUP_ATYPE(CGROUP_INET_EGRESS);
44 	CGROUP_ATYPE(CGROUP_INET_SOCK_CREATE);
45 	CGROUP_ATYPE(CGROUP_SOCK_OPS);
46 	CGROUP_ATYPE(CGROUP_DEVICE);
47 	CGROUP_ATYPE(CGROUP_INET4_BIND);
48 	CGROUP_ATYPE(CGROUP_INET6_BIND);
49 	CGROUP_ATYPE(CGROUP_INET4_CONNECT);
50 	CGROUP_ATYPE(CGROUP_INET6_CONNECT);
51 	CGROUP_ATYPE(CGROUP_INET4_POST_BIND);
52 	CGROUP_ATYPE(CGROUP_INET6_POST_BIND);
53 	CGROUP_ATYPE(CGROUP_UDP4_SENDMSG);
54 	CGROUP_ATYPE(CGROUP_UDP6_SENDMSG);
55 	CGROUP_ATYPE(CGROUP_SYSCTL);
56 	CGROUP_ATYPE(CGROUP_UDP4_RECVMSG);
57 	CGROUP_ATYPE(CGROUP_UDP6_RECVMSG);
58 	CGROUP_ATYPE(CGROUP_GETSOCKOPT);
59 	CGROUP_ATYPE(CGROUP_SETSOCKOPT);
60 	CGROUP_ATYPE(CGROUP_INET4_GETPEERNAME);
61 	CGROUP_ATYPE(CGROUP_INET6_GETPEERNAME);
62 	CGROUP_ATYPE(CGROUP_INET4_GETSOCKNAME);
63 	CGROUP_ATYPE(CGROUP_INET6_GETSOCKNAME);
64 	CGROUP_ATYPE(CGROUP_INET_SOCK_RELEASE);
65 	default:
66 		return CGROUP_BPF_ATTACH_TYPE_INVALID;
67 	}
68 }
69 
70 #undef CGROUP_ATYPE
71 
72 extern struct static_key_false cgroup_bpf_enabled_key[MAX_CGROUP_BPF_ATTACH_TYPE];
73 #define cgroup_bpf_enabled(atype) static_branch_unlikely(&cgroup_bpf_enabled_key[atype])
74 
75 #define for_each_cgroup_storage_type(stype) \
76 	for (stype = 0; stype < MAX_BPF_CGROUP_STORAGE_TYPE; stype++)
77 
78 struct bpf_cgroup_storage_map;
79 
80 struct bpf_storage_buffer {
81 	struct rcu_head rcu;
82 	char data[];
83 };
84 
85 struct bpf_cgroup_storage {
86 	union {
87 		struct bpf_storage_buffer *buf;
88 		void __percpu *percpu_buf;
89 	};
90 	struct bpf_cgroup_storage_map *map;
91 	struct bpf_cgroup_storage_key key;
92 	struct list_head list_map;
93 	struct list_head list_cg;
94 	struct rb_node node;
95 	struct rcu_head rcu;
96 };
97 
98 struct bpf_cgroup_link {
99 	struct bpf_link link;
100 	struct cgroup *cgroup;
101 	enum bpf_attach_type type;
102 };
103 
104 struct bpf_prog_list {
105 	struct hlist_node node;
106 	struct bpf_prog *prog;
107 	struct bpf_cgroup_link *link;
108 	struct bpf_cgroup_storage *storage[MAX_BPF_CGROUP_STORAGE_TYPE];
109 };
110 
111 int cgroup_bpf_inherit(struct cgroup *cgrp);
112 void cgroup_bpf_offline(struct cgroup *cgrp);
113 
114 int __cgroup_bpf_run_filter_skb(struct sock *sk,
115 				struct sk_buff *skb,
116 				enum cgroup_bpf_attach_type atype);
117 
118 int __cgroup_bpf_run_filter_sk(struct sock *sk,
119 			       enum cgroup_bpf_attach_type atype);
120 
121 int __cgroup_bpf_run_filter_sock_addr(struct sock *sk,
122 				      struct sockaddr *uaddr,
123 				      enum cgroup_bpf_attach_type atype,
124 				      void *t_ctx,
125 				      u32 *flags);
126 
127 int __cgroup_bpf_run_filter_sock_ops(struct sock *sk,
128 				     struct bpf_sock_ops_kern *sock_ops,
129 				     enum cgroup_bpf_attach_type atype);
130 
131 int __cgroup_bpf_check_dev_permission(short dev_type, u32 major, u32 minor,
132 				      short access, enum cgroup_bpf_attach_type atype);
133 
134 int __cgroup_bpf_run_filter_sysctl(struct ctl_table_header *head,
135 				   struct ctl_table *table, int write,
136 				   char **buf, size_t *pcount, loff_t *ppos,
137 				   enum cgroup_bpf_attach_type atype);
138 
139 int __cgroup_bpf_run_filter_setsockopt(struct sock *sock, int *level,
140 				       int *optname, char __user *optval,
141 				       int *optlen, char **kernel_optval);
142 int __cgroup_bpf_run_filter_getsockopt(struct sock *sk, int level,
143 				       int optname, char __user *optval,
144 				       int __user *optlen, int max_optlen,
145 				       int retval);
146 
147 int __cgroup_bpf_run_filter_getsockopt_kern(struct sock *sk, int level,
148 					    int optname, void *optval,
149 					    int *optlen, int retval);
150 
cgroup_storage_type(struct bpf_map * map)151 static inline enum bpf_cgroup_storage_type cgroup_storage_type(
152 	struct bpf_map *map)
153 {
154 	if (map->map_type == BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE)
155 		return BPF_CGROUP_STORAGE_PERCPU;
156 
157 	return BPF_CGROUP_STORAGE_SHARED;
158 }
159 
160 struct bpf_cgroup_storage *
161 cgroup_storage_lookup(struct bpf_cgroup_storage_map *map,
162 		      void *key, bool locked);
163 struct bpf_cgroup_storage *bpf_cgroup_storage_alloc(struct bpf_prog *prog,
164 					enum bpf_cgroup_storage_type stype);
165 void bpf_cgroup_storage_free(struct bpf_cgroup_storage *storage);
166 void bpf_cgroup_storage_link(struct bpf_cgroup_storage *storage,
167 			     struct cgroup *cgroup,
168 			     enum bpf_attach_type type);
169 void bpf_cgroup_storage_unlink(struct bpf_cgroup_storage *storage);
170 int bpf_cgroup_storage_assign(struct bpf_prog_aux *aux, struct bpf_map *map);
171 
172 int bpf_percpu_cgroup_storage_copy(struct bpf_map *map, void *key, void *value);
173 int bpf_percpu_cgroup_storage_update(struct bpf_map *map, void *key,
174 				     void *value, u64 flags);
175 
176 /* Opportunistic check to see whether we have any BPF program attached*/
cgroup_bpf_sock_enabled(struct sock * sk,enum cgroup_bpf_attach_type type)177 static inline bool cgroup_bpf_sock_enabled(struct sock *sk,
178 					   enum cgroup_bpf_attach_type type)
179 {
180 	struct cgroup *cgrp = sock_cgroup_ptr(&sk->sk_cgrp_data);
181 	struct bpf_prog_array *array;
182 
183 	array = rcu_access_pointer(cgrp->bpf.effective[type]);
184 	return array != &bpf_empty_prog_array.hdr;
185 }
186 
187 /* Wrappers for __cgroup_bpf_run_filter_skb() guarded by cgroup_bpf_enabled. */
188 #define BPF_CGROUP_RUN_PROG_INET_INGRESS(sk, skb)			      \
189 ({									      \
190 	int __ret = 0;							      \
191 	if (cgroup_bpf_enabled(CGROUP_INET_INGRESS) &&			      \
192 	    cgroup_bpf_sock_enabled(sk, CGROUP_INET_INGRESS))		      \
193 		__ret = __cgroup_bpf_run_filter_skb(sk, skb,		      \
194 						    CGROUP_INET_INGRESS); \
195 									      \
196 	__ret;								      \
197 })
198 
199 #define BPF_CGROUP_RUN_PROG_INET_EGRESS(sk, skb)			       \
200 ({									       \
201 	int __ret = 0;							       \
202 	if (cgroup_bpf_enabled(CGROUP_INET_EGRESS) && sk && sk == skb->sk) { \
203 		typeof(sk) __sk = sk_to_full_sk(sk);			       \
204 		if (sk_fullsock(__sk) &&				       \
205 		    cgroup_bpf_sock_enabled(__sk, CGROUP_INET_EGRESS))	       \
206 			__ret = __cgroup_bpf_run_filter_skb(__sk, skb,	       \
207 						      CGROUP_INET_EGRESS); \
208 	}								       \
209 	__ret;								       \
210 })
211 
212 #define BPF_CGROUP_RUN_SK_PROG(sk, atype)				       \
213 ({									       \
214 	int __ret = 0;							       \
215 	if (cgroup_bpf_enabled(atype)) {					       \
216 		__ret = __cgroup_bpf_run_filter_sk(sk, atype);		       \
217 	}								       \
218 	__ret;								       \
219 })
220 
221 #define BPF_CGROUP_RUN_PROG_INET_SOCK(sk)				       \
222 	BPF_CGROUP_RUN_SK_PROG(sk, CGROUP_INET_SOCK_CREATE)
223 
224 #define BPF_CGROUP_RUN_PROG_INET_SOCK_RELEASE(sk)			       \
225 	BPF_CGROUP_RUN_SK_PROG(sk, CGROUP_INET_SOCK_RELEASE)
226 
227 #define BPF_CGROUP_RUN_PROG_INET4_POST_BIND(sk)				       \
228 	BPF_CGROUP_RUN_SK_PROG(sk, CGROUP_INET4_POST_BIND)
229 
230 #define BPF_CGROUP_RUN_PROG_INET6_POST_BIND(sk)				       \
231 	BPF_CGROUP_RUN_SK_PROG(sk, CGROUP_INET6_POST_BIND)
232 
233 #define BPF_CGROUP_RUN_SA_PROG(sk, uaddr, atype)				       \
234 ({									       \
235 	int __ret = 0;							       \
236 	if (cgroup_bpf_enabled(atype))					       \
237 		__ret = __cgroup_bpf_run_filter_sock_addr(sk, uaddr, atype,     \
238 							  NULL, NULL);	       \
239 	__ret;								       \
240 })
241 
242 #define BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, atype, t_ctx)		       \
243 ({									       \
244 	int __ret = 0;							       \
245 	if (cgroup_bpf_enabled(atype))	{				       \
246 		lock_sock(sk);						       \
247 		__ret = __cgroup_bpf_run_filter_sock_addr(sk, uaddr, atype,     \
248 							  t_ctx, NULL);	       \
249 		release_sock(sk);					       \
250 	}								       \
251 	__ret;								       \
252 })
253 
254 /* BPF_CGROUP_INET4_BIND and BPF_CGROUP_INET6_BIND can return extra flags
255  * via upper bits of return code. The only flag that is supported
256  * (at bit position 0) is to indicate CAP_NET_BIND_SERVICE capability check
257  * should be bypassed (BPF_RET_BIND_NO_CAP_NET_BIND_SERVICE).
258  */
259 #define BPF_CGROUP_RUN_PROG_INET_BIND_LOCK(sk, uaddr, atype, bind_flags)	       \
260 ({									       \
261 	u32 __flags = 0;						       \
262 	int __ret = 0;							       \
263 	if (cgroup_bpf_enabled(atype))	{				       \
264 		lock_sock(sk);						       \
265 		__ret = __cgroup_bpf_run_filter_sock_addr(sk, uaddr, atype,     \
266 							  NULL, &__flags);     \
267 		release_sock(sk);					       \
268 		if (__flags & BPF_RET_BIND_NO_CAP_NET_BIND_SERVICE)	       \
269 			*bind_flags |= BIND_NO_CAP_NET_BIND_SERVICE;	       \
270 	}								       \
271 	__ret;								       \
272 })
273 
274 #define BPF_CGROUP_PRE_CONNECT_ENABLED(sk)				       \
275 	((cgroup_bpf_enabled(CGROUP_INET4_CONNECT) ||		       \
276 	  cgroup_bpf_enabled(CGROUP_INET6_CONNECT)) &&		       \
277 	 (sk)->sk_prot->pre_connect)
278 
279 #define BPF_CGROUP_RUN_PROG_INET4_CONNECT(sk, uaddr)			       \
280 	BPF_CGROUP_RUN_SA_PROG(sk, uaddr, CGROUP_INET4_CONNECT)
281 
282 #define BPF_CGROUP_RUN_PROG_INET6_CONNECT(sk, uaddr)			       \
283 	BPF_CGROUP_RUN_SA_PROG(sk, uaddr, CGROUP_INET6_CONNECT)
284 
285 #define BPF_CGROUP_RUN_PROG_INET4_CONNECT_LOCK(sk, uaddr)		       \
286 	BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, CGROUP_INET4_CONNECT, NULL)
287 
288 #define BPF_CGROUP_RUN_PROG_INET6_CONNECT_LOCK(sk, uaddr)		       \
289 	BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, CGROUP_INET6_CONNECT, NULL)
290 
291 #define BPF_CGROUP_RUN_PROG_UDP4_SENDMSG_LOCK(sk, uaddr, t_ctx)		       \
292 	BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, CGROUP_UDP4_SENDMSG, t_ctx)
293 
294 #define BPF_CGROUP_RUN_PROG_UDP6_SENDMSG_LOCK(sk, uaddr, t_ctx)		       \
295 	BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, CGROUP_UDP6_SENDMSG, t_ctx)
296 
297 #define BPF_CGROUP_RUN_PROG_UDP4_RECVMSG_LOCK(sk, uaddr)			\
298 	BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, CGROUP_UDP4_RECVMSG, NULL)
299 
300 #define BPF_CGROUP_RUN_PROG_UDP6_RECVMSG_LOCK(sk, uaddr)			\
301 	BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, CGROUP_UDP6_RECVMSG, NULL)
302 
303 /* The SOCK_OPS"_SK" macro should be used when sock_ops->sk is not a
304  * fullsock and its parent fullsock cannot be traced by
305  * sk_to_full_sk().
306  *
307  * e.g. sock_ops->sk is a request_sock and it is under syncookie mode.
308  * Its listener-sk is not attached to the rsk_listener.
309  * In this case, the caller holds the listener-sk (unlocked),
310  * set its sock_ops->sk to req_sk, and call this SOCK_OPS"_SK" with
311  * the listener-sk such that the cgroup-bpf-progs of the
312  * listener-sk will be run.
313  *
314  * Regardless of syncookie mode or not,
315  * calling bpf_setsockopt on listener-sk will not make sense anyway,
316  * so passing 'sock_ops->sk == req_sk' to the bpf prog is appropriate here.
317  */
318 #define BPF_CGROUP_RUN_PROG_SOCK_OPS_SK(sock_ops, sk)			\
319 ({									\
320 	int __ret = 0;							\
321 	if (cgroup_bpf_enabled(CGROUP_SOCK_OPS))			\
322 		__ret = __cgroup_bpf_run_filter_sock_ops(sk,		\
323 							 sock_ops,	\
324 							 CGROUP_SOCK_OPS); \
325 	__ret;								\
326 })
327 
328 #define BPF_CGROUP_RUN_PROG_SOCK_OPS(sock_ops)				       \
329 ({									       \
330 	int __ret = 0;							       \
331 	if (cgroup_bpf_enabled(CGROUP_SOCK_OPS) && (sock_ops)->sk) {       \
332 		typeof(sk) __sk = sk_to_full_sk((sock_ops)->sk);	       \
333 		if (__sk && sk_fullsock(__sk))				       \
334 			__ret = __cgroup_bpf_run_filter_sock_ops(__sk,	       \
335 								 sock_ops,     \
336 							 CGROUP_SOCK_OPS); \
337 	}								       \
338 	__ret;								       \
339 })
340 
341 #define BPF_CGROUP_RUN_PROG_DEVICE_CGROUP(atype, major, minor, access)	      \
342 ({									      \
343 	int __ret = 0;							      \
344 	if (cgroup_bpf_enabled(CGROUP_DEVICE))			      \
345 		__ret = __cgroup_bpf_check_dev_permission(atype, major, minor, \
346 							  access,	      \
347 							  CGROUP_DEVICE); \
348 									      \
349 	__ret;								      \
350 })
351 
352 
353 #define BPF_CGROUP_RUN_PROG_SYSCTL(head, table, write, buf, count, pos)  \
354 ({									       \
355 	int __ret = 0;							       \
356 	if (cgroup_bpf_enabled(CGROUP_SYSCTL))			       \
357 		__ret = __cgroup_bpf_run_filter_sysctl(head, table, write,     \
358 						       buf, count, pos,        \
359 						       CGROUP_SYSCTL);     \
360 	__ret;								       \
361 })
362 
363 #define BPF_CGROUP_RUN_PROG_SETSOCKOPT(sock, level, optname, optval, optlen,   \
364 				       kernel_optval)			       \
365 ({									       \
366 	int __ret = 0;							       \
367 	if (cgroup_bpf_enabled(CGROUP_SETSOCKOPT) &&			       \
368 	    cgroup_bpf_sock_enabled(sock, CGROUP_SETSOCKOPT))		       \
369 		__ret = __cgroup_bpf_run_filter_setsockopt(sock, level,	       \
370 							   optname, optval,    \
371 							   optlen,	       \
372 							   kernel_optval);     \
373 	__ret;								       \
374 })
375 
376 #define BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN(optlen)			       \
377 ({									       \
378 	int __ret = 0;							       \
379 	if (cgroup_bpf_enabled(CGROUP_GETSOCKOPT))			       \
380 		get_user(__ret, optlen);				       \
381 	__ret;								       \
382 })
383 
384 #define BPF_CGROUP_RUN_PROG_GETSOCKOPT(sock, level, optname, optval, optlen,   \
385 				       max_optlen, retval)		       \
386 ({									       \
387 	int __ret = retval;						       \
388 	if (cgroup_bpf_enabled(CGROUP_GETSOCKOPT) &&			       \
389 	    cgroup_bpf_sock_enabled(sock, CGROUP_GETSOCKOPT))		       \
390 		if (!(sock)->sk_prot->bpf_bypass_getsockopt ||		       \
391 		    !INDIRECT_CALL_INET_1((sock)->sk_prot->bpf_bypass_getsockopt, \
392 					tcp_bpf_bypass_getsockopt,	       \
393 					level, optname))		       \
394 			__ret = __cgroup_bpf_run_filter_getsockopt(	       \
395 				sock, level, optname, optval, optlen,	       \
396 				max_optlen, retval);			       \
397 	__ret;								       \
398 })
399 
400 #define BPF_CGROUP_RUN_PROG_GETSOCKOPT_KERN(sock, level, optname, optval,      \
401 					    optlen, retval)		       \
402 ({									       \
403 	int __ret = retval;						       \
404 	if (cgroup_bpf_enabled(CGROUP_GETSOCKOPT))			       \
405 		__ret = __cgroup_bpf_run_filter_getsockopt_kern(	       \
406 			sock, level, optname, optval, optlen, retval);	       \
407 	__ret;								       \
408 })
409 
410 int cgroup_bpf_prog_attach(const union bpf_attr *attr,
411 			   enum bpf_prog_type ptype, struct bpf_prog *prog);
412 int cgroup_bpf_prog_detach(const union bpf_attr *attr,
413 			   enum bpf_prog_type ptype);
414 int cgroup_bpf_link_attach(const union bpf_attr *attr, struct bpf_prog *prog);
415 int cgroup_bpf_prog_query(const union bpf_attr *attr,
416 			  union bpf_attr __user *uattr);
417 
418 const struct bpf_func_proto *
419 cgroup_common_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog);
420 const struct bpf_func_proto *
421 cgroup_current_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog);
422 #else
423 
cgroup_bpf_inherit(struct cgroup * cgrp)424 static inline int cgroup_bpf_inherit(struct cgroup *cgrp) { return 0; }
cgroup_bpf_offline(struct cgroup * cgrp)425 static inline void cgroup_bpf_offline(struct cgroup *cgrp) {}
426 
cgroup_bpf_prog_attach(const union bpf_attr * attr,enum bpf_prog_type ptype,struct bpf_prog * prog)427 static inline int cgroup_bpf_prog_attach(const union bpf_attr *attr,
428 					 enum bpf_prog_type ptype,
429 					 struct bpf_prog *prog)
430 {
431 	return -EINVAL;
432 }
433 
cgroup_bpf_prog_detach(const union bpf_attr * attr,enum bpf_prog_type ptype)434 static inline int cgroup_bpf_prog_detach(const union bpf_attr *attr,
435 					 enum bpf_prog_type ptype)
436 {
437 	return -EINVAL;
438 }
439 
cgroup_bpf_link_attach(const union bpf_attr * attr,struct bpf_prog * prog)440 static inline int cgroup_bpf_link_attach(const union bpf_attr *attr,
441 					 struct bpf_prog *prog)
442 {
443 	return -EINVAL;
444 }
445 
cgroup_bpf_prog_query(const union bpf_attr * attr,union bpf_attr __user * uattr)446 static inline int cgroup_bpf_prog_query(const union bpf_attr *attr,
447 					union bpf_attr __user *uattr)
448 {
449 	return -EINVAL;
450 }
451 
452 static inline const struct bpf_func_proto *
cgroup_common_func_proto(enum bpf_func_id func_id,const struct bpf_prog * prog)453 cgroup_common_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
454 {
455 	return NULL;
456 }
457 
458 static inline const struct bpf_func_proto *
cgroup_current_func_proto(enum bpf_func_id func_id,const struct bpf_prog * prog)459 cgroup_current_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
460 {
461 	return NULL;
462 }
463 
bpf_cgroup_storage_assign(struct bpf_prog_aux * aux,struct bpf_map * map)464 static inline int bpf_cgroup_storage_assign(struct bpf_prog_aux *aux,
465 					    struct bpf_map *map) { return 0; }
bpf_cgroup_storage_alloc(struct bpf_prog * prog,enum bpf_cgroup_storage_type stype)466 static inline struct bpf_cgroup_storage *bpf_cgroup_storage_alloc(
467 	struct bpf_prog *prog, enum bpf_cgroup_storage_type stype) { return NULL; }
bpf_cgroup_storage_free(struct bpf_cgroup_storage * storage)468 static inline void bpf_cgroup_storage_free(
469 	struct bpf_cgroup_storage *storage) {}
bpf_percpu_cgroup_storage_copy(struct bpf_map * map,void * key,void * value)470 static inline int bpf_percpu_cgroup_storage_copy(struct bpf_map *map, void *key,
471 						 void *value) {
472 	return 0;
473 }
bpf_percpu_cgroup_storage_update(struct bpf_map * map,void * key,void * value,u64 flags)474 static inline int bpf_percpu_cgroup_storage_update(struct bpf_map *map,
475 					void *key, void *value, u64 flags) {
476 	return 0;
477 }
478 
479 #define cgroup_bpf_enabled(atype) (0)
480 #define BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, atype, t_ctx) ({ 0; })
481 #define BPF_CGROUP_RUN_SA_PROG(sk, uaddr, atype) ({ 0; })
482 #define BPF_CGROUP_PRE_CONNECT_ENABLED(sk) (0)
483 #define BPF_CGROUP_RUN_PROG_INET_INGRESS(sk,skb) ({ 0; })
484 #define BPF_CGROUP_RUN_PROG_INET_EGRESS(sk,skb) ({ 0; })
485 #define BPF_CGROUP_RUN_PROG_INET_SOCK(sk) ({ 0; })
486 #define BPF_CGROUP_RUN_PROG_INET_SOCK_RELEASE(sk) ({ 0; })
487 #define BPF_CGROUP_RUN_PROG_INET_BIND_LOCK(sk, uaddr, atype, flags) ({ 0; })
488 #define BPF_CGROUP_RUN_PROG_INET4_POST_BIND(sk) ({ 0; })
489 #define BPF_CGROUP_RUN_PROG_INET6_POST_BIND(sk) ({ 0; })
490 #define BPF_CGROUP_RUN_PROG_INET4_CONNECT(sk, uaddr) ({ 0; })
491 #define BPF_CGROUP_RUN_PROG_INET4_CONNECT_LOCK(sk, uaddr) ({ 0; })
492 #define BPF_CGROUP_RUN_PROG_INET6_CONNECT(sk, uaddr) ({ 0; })
493 #define BPF_CGROUP_RUN_PROG_INET6_CONNECT_LOCK(sk, uaddr) ({ 0; })
494 #define BPF_CGROUP_RUN_PROG_UDP4_SENDMSG_LOCK(sk, uaddr, t_ctx) ({ 0; })
495 #define BPF_CGROUP_RUN_PROG_UDP6_SENDMSG_LOCK(sk, uaddr, t_ctx) ({ 0; })
496 #define BPF_CGROUP_RUN_PROG_UDP4_RECVMSG_LOCK(sk, uaddr) ({ 0; })
497 #define BPF_CGROUP_RUN_PROG_UDP6_RECVMSG_LOCK(sk, uaddr) ({ 0; })
498 #define BPF_CGROUP_RUN_PROG_SOCK_OPS(sock_ops) ({ 0; })
499 #define BPF_CGROUP_RUN_PROG_DEVICE_CGROUP(atype, major, minor, access) ({ 0; })
500 #define BPF_CGROUP_RUN_PROG_SYSCTL(head,table,write,buf,count,pos) ({ 0; })
501 #define BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN(optlen) ({ 0; })
502 #define BPF_CGROUP_RUN_PROG_GETSOCKOPT(sock, level, optname, optval, \
503 				       optlen, max_optlen, retval) ({ retval; })
504 #define BPF_CGROUP_RUN_PROG_GETSOCKOPT_KERN(sock, level, optname, optval, \
505 					    optlen, retval) ({ retval; })
506 #define BPF_CGROUP_RUN_PROG_SETSOCKOPT(sock, level, optname, optval, optlen, \
507 				       kernel_optval) ({ 0; })
508 
509 #define for_each_cgroup_storage_type(stype) for (; false; )
510 
511 #endif /* CONFIG_CGROUP_BPF */
512 
513 #endif /* _BPF_CGROUP_H */
514